/Engine/Source/Runtime/Engine/Public/ActiveSound.h
Lets the audio thread know if additional Source Bus Send information has been added
the array of Sound Bus Sends that have not yet been added to the render thread
[TArray](API\Runtime\Core\Containers\TArray)< [TTuple](API\Runtime\Core\Misc\TTuple)< EBusSendType, [FSoundSourceBusSendInfo](API\Runtime\Engine\Sound\FSoundSourceBusSendInfo) > > const & GetNewBusSends() const